In a graph
There are many places where you can find graphs of humans exhaling when sitting. Many libraries have these graphs available.
Newspapers magazines books internet
Rene descartes invented bar graphs you can find more about him in the book."A flyon the celieng."
wikipedia!!!!!!!!!!!!!!!!!
try www.gimp.org
Yes of course you can
Some people find it easier to take information in if it is presented visually. Graphs can be a usuful summary of a lot of numerical information.
Only if they are badly presented graphs or if the person viewing them is not a visual person.
One can find a tool in which to create bar graphs at the online site of Math Warehouse. The site offers a free tool that will enable anyone to make as many graphs as needed. One can also use Excel to make bar graphs if excel is available in their Office suite.
3 different types of graphs found in newspapers or magazines
By reading the peaks.